After delivery, a rare but potentially serious complication is having the uterus turn partially or completely inside out. This happens in about 1 out of every 2,500 pregnancies, and is called "uterine inversion." Uterine inversion can cause serious loss of blood, and it can be fatal if it is not treated immediately.
The uterus can become inverted when the placenta is being delivered, but is still partly attached to the uterus. In most cases, your doctor can gently move the uterus back into its proper position, and there are no long-term complications.
But if it can't be moved back into place manually by your doctor, abdominal surgery may be required to correct it.